Cooper is 9yrs old. He had his left leg removed 2 years ago due to a malignant mass on foot. All ultrasounds since normal. Last week, dog got sick, throwing up, some lethargy, drinking lots of water. Took him to ER vet early morning, got in the door, and he just laid down and would not move. Had to be carried to back room. Vet came and told us his condition was emergent. Pale gums, semi conscious. Was told tumor on heart bled into pericardial sac. Right heart mass, Suspected hemangiosarcoma. Could drain or euthanize. Opted to drain, and Cooper bounced back. Was told chemotherapy may extend life by 6 months. His oncologist started chemo right away with Doxorubicin 2mg/ml with Diphenhydramine 50mg/ml injection. Not like first chemo for foot. He is SO sick afterwards, won’t eat for 4 days. Vomiting, diarrhea, lethargy, takes about 10 days to recover. Thinking we should stop chemo. Quality of life we think important. But may only get weeks with him. Suggestions helpful. We are so torn. Do not want him to suffer. Will we know when it’s time to euthanize, or will he just collapse for lack of oxygen? Can chemo put him into remission?

my 13 years old Lab was euthanised two days ago and I feel like dying myself...saturday we ran to the hospital because he had like a seizure in the morning, he didn't take food in the morning as he usually does, they gave him pills for pain (thinking his arthritic condition could be a source of pain and cause the seizure ) but he didn't even swallowed them though he could walk a little when we arrived home...he was very tired and at some point lethargic, we took him again to the ER and they found he had tons of liquid in his heart and abdomen apparently because of a heart base tumor that wasn't visible because of so much liquid (hemangiosarcoma was the guess). since some time ago he's been suffering from arthritis and has been coughing (like hacking) all the time (they told me it often happens in old dogs and that i didn't need to worry). I was told there was a possibility to drain the liquid but that it would happen again in one hour, one day, one week....and that I couldn't bring him home in such bad condition. he had trouble breathing so they put him oxygen to ease his breathing... finally the word Euthanise came and in less than two hours later we came home crying like crazy and without our angel dog Cacao. I still don't understand what and how this happened I just know my sweet dog was fairly well for an old arthritic dog and that today he's gone in the most horrific way. does this makes sense? is it possible for such a tumor if that was a tumor to be so unnoticed to this such quick final. PLEASE HELP ME UNDERSTAND

Our dog Buddy has a large mass that takes up the whole right ventricle of his heart. The vet told us it is growing through the septum into the left ventricle so his heart has very low contractility. We had noticed his activity level drop and he seemed to not be feeling well. He is 13ish (stray we took in when he was maybe 2 years old, just a guess) and has arthritis in his spine so that's what we thought was going on. The night before his vet appointment he collasped. Turns out it was a syncopic episode. Our vet ran some tests and was concerned with an elevated heart rate. Referred us to a vet with more cardiac experience an hour away. They found the growth in an ultrasound and ecg. They said due to the size and location there was nothing they could do. Gave us Pimobendan to help try to increase his heart contactility. That was 3 1/2 weeks ago. They said they didn't know what to tell us to expect since they never seen a tumor that large in a dog's heart before but they gave him a poor prognosis and said he did not have much time left. Buddy is mentally fine and doesn't seem to be in pain but he cannot walk more than 10-20 feet without needing a rest or collapsing. His condition worsens daily. Gums are very pale, feet cold, he gets wobbly if he stands up too long. Needless to say we've been spoiling him as much as possible. Over the last week he has stared to get very bad diarrhea which is very difficult to deal with. He really is only eating rice, kibble, boiled chicken, pumpkin. We have tried just rice and broth and it doesn't change anything. Is it possible it's the medicine? Should we stop giving it to him? Anything safe to treat the diarrhea? Our hearts are broken and this is a terribly hard situation. He is still very much himself mentally and doesn't seem to be in pain so we are not ready to make the decision to say goodbye. We just want to keep him comfortable.